Water splitting (IMAGE)
Caption
This image shows the interplay among electrode wettability, porous structure, and overpotential. With the decrease of wettability (moving left to right), the gas-evolving electrode transitions from an internal growth and departure mode to a gas-filled mode, associated with a drastic change of bubble behaviors and significant increase of overpotential.
Credit
Image courtesy of Ryuichi Iwata, Lenan Zhang, Evelyn Wang, Betar Gallant et al
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